JPH0566819A - Interactive automatic programming method - Google Patents

Abstract

PURPOSE:To obtain the interactive automatic programming method capable of easily executing a trial working. CONSTITUTION:Before executing a finish working process 502, an intermediate finish working process 501 using a tool used in the finish working process is executed, and such a working program 50 as the offset amount of the tool obtained by executing this intermediate finish working process is reflected on the finish working process 502 executed continuously is prepared automatically. To the program part of the intermediate finish working process 501, an optional block skip code (symbol /) is added so that the execution of the intermediate finish working process can be selected arbitrarily.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an interactive automatic programming method for a numerical controller, and more particularly to a dialog for creating a machining program in which a trial machining program for obtaining a tool offset amount is included in an actual machining program. Shape automatic programming method.

[0002]

2. Description of the Related Art Conventionally, in order to correct an offset, a trial machining is executed by using a tool used in the finishing machining before a finishing machining program is created, the offset amount is measured in advance, and the measured offset amount is calculated. It was reflected in the finishing program. In executing the trial machining, a machining program is manually created and the trial machining is executed according to the program, or the trial machining is manually executed.

[0003]

However, in the method of executing the manually created trial machining program,
It takes time to create a trial machining program. Further, it takes much more time to execute the trial machining by manual operation, and skilled manpower is required. There is a problem that neither method is efficient in creating the finishing machining program. The present invention has been made in view of the above circumstances, and an object thereof is to provide an interactive automatic programming method capable of easily executing trial machining.

[0004]

In order to solve the above-mentioned problems, the present invention reads a tool number used in an actual machining process in an interactive automatic programming method of a numerical controller for executing trial machining and actual machining. , Performing a trial machining step using the tool having the read tool number in a step prior to the actual machining step, creating a first part of a machining program, and executing the trial machining step A second portion of the machining program is created by reading the measured offset amount of the tool and executing the actual machining process based on the read offset amount, and at least the first portion and the second portion. An interactive automatic programming method is provided which is characterized by creating a single machining program consisting of parts.

[0005]

Before performing the actual machining process, the trial machining process using the tool used in this actual machining process is executed. The offset amount of the tool obtained by the execution of this trial machining step is reflected in the subsequently executed actual machining step. As described above, a single machining program that can execute the machining process is automatically created.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 2 is a block diagram showing an example of an interactive numerical control device to which the method of the present invention is applied. Processor 11
Controls the entire numerical controller according to the system program stored in the ROM 12. EPRO in ROM 12
M or EEPROM is used. RAM13 is SR
AM or the like is used to store various data or input / output signals. A battery-backed CMOS is used for the non-volatile memory 14, and parameters such as a pitch error correction amount and a tool correction amount to be held even after the power is turned off are stored.

The graphic control circuit 15 converts the digital signal into a signal for display and gives it to the display device 16. A CRT or a liquid crystal display device is used as the display device 16. The display device 16 displays the shape, the machining conditions, the generated machining program, and the like when the machining program is created interactively. The keyboard 17 is composed of symbolic keys, numerical keys, etc., and necessary graphic data and NC data are input using these keys.

The axis control circuit 18 receives an axis movement command from the processor 11, creates an axis drive signal, and outputs it to the servo amplifier 19. The servo amplifier 19 receives the drive signal and drives the servo motor of the machine tool 20. These components are coupled to each other by a bus 21.

A PMC (Programmable Machine Controller) 22 receives a T function signal (tool selection command) or the like via the bus 21 when executing an NC program. Then, this signal is processed by a sequence program, a signal is output as an operation command, and the machine tool 20 is controlled.
Further, it receives a status signal from the machine tool 20, performs a sequence process, and transfers a necessary input signal to the processor 11 via the bus 21.

The bus 21 is further provided with a software key 23 whose function is changed by a system program or the like.
A serial interface 24 for sending NC data to an external device such as a floppy disk, a printer or a paper tape reader (PTR) is connected. The software key 23 is provided on the CRT / MDI panel 25 together with the display device 16 and the keyboard 17.

In addition to the processor 11 which is the CPU for NC, the bus 21 is connected with a processor 31 for interaction having a bus 30. ROM 32 on the bus 30,
The RAM 33 and the non-volatile memory 34 are connected. The interactive data input screen displayed on the display device 16 is stored in the ROM 32. On this interactive data input screen, the overall motion trajectory of the tool and the like are displayed as background animation when the NC sentence is created. Further, the work or data that can be set by the input screen is displayed on the display device 16 in a menu format. The item to be selected from the menu is selected by the software key 23 arranged at the bottom of the screen corresponding to the menu. The meaning of the function corresponding to the software key 23 changes for each screen. SR in RAM33
AM or the like is used, and various kinds of data for dialogue are stored here.

The input data is the processor 3 for dialogue.
1 is processed, and a material processing program is created. The created program data is sequentially background-animated on the display device 16 used interactively. In addition, the nonvolatile memory 34 has an NC
The material machining program stored as a sentence is also executed during machining simulation of the machine tool 20, and is displayed in the foreground animation.

FIG. 3 is a flowchart showing a procedure of an operator's input operation performed from the keyboard 17 and the software key 23 on the interactive data input screen displayed on the display device 16. The number following S indicates a step number. [S1] The shape of the material (work), the material, etc. are defined. [S2] The shape of the machined part is defined. [S3] The processing is defined. Detailed contents of this step will be described with reference to FIG. [S4] An instruction is made to create a machining program (NC sentence) based on the definition (input) of the above steps S1 to S3.

FIG. 4 is a flow chart showing the detailed contents of step S3 of FIG. [S301] The type of processing is selected for all steps and designated in the order of steps. FIG. 5 is a diagram showing a display screen of the display device 16 that displays an example of the processing type designated by the execution of step S301. According to the figure, "outer diameter medium finish processing" is specified as a pre-process of "outer diameter finish processing". [S302] The control variable i is initialized to 01. [S303] The tool number of the work type i specified in step S301 is input. [S304] The machining start position and tool waypoint of the work type i are designated.

[S305] The processing conditions and cutting area for the work type i are designated. For outer diameter semi-finishing machining of model 04, an optional block skip code (symbol /) is specified to be added to the machining program. This optional block skip code is for preventing the block to which this code is added from being executed when the optional block skip switch included in the keyboard 17 is on. Further, the cutting region of the outer diameter medium finishing process of the work type 04 is designated as the hatching portion 51 of FIG. 6, and the cutting region of the outer diameter finishing process of the work type 05 is designated as the hatching portion 52 of FIG. 7. 6 and 7 show the shapes of the material 41 and the component 42, FIG. 6 shows a cutting region for outer diameter intermediate finishing, and FIG. 7 shows a cutting region for outer diameter finishing.

[S306] Steps S303 to S305 are performed for all the processes of the machining type designated in step S301.
It is determined whether the execution of is completed. If not completed, the process proceeds to step S307. On the other hand, if completed, the process returns to FIG. 3 and proceeds to step S4. [S307] The control variable i is incremented, and the process returns to step S303.

FIG. 1 shows a machining program created as a result of executing step S4 of FIG. 3 when the machining types designated in step S301 of FIG. 4 are only intermediate finishing and finishing. Then, in this machining program 50, the intermediate finishing 501 and the finishing 502 are performed in this order, and as shown in block 5011 and block 5021, the tools used in the finishing machining 502 are processed in the intermediate finishing 501. It is being used. An optional block skip code (symbol /) is added to the beginning of each block of the semi-finishing processing unit 501.

FIG. 8 is a diagram showing a tool locus through which the tool passes as a result of the execution of the machining program 50 shown in FIG.
A locus 61 is a tool locus for semi-finishing, and a locus 62 is a tool locus for finishing. How the machining program is executed will be described with reference to FIGS. 8 and 1. That is, when the machining program 50 is executed when the optional block skip switch included in the keyboard 17 is off, the semi-finishing machining unit 501 is first executed, and the trajectory 61 is generated by the same tool as that used for the finishing machining unit 502. Is drawn. Since the trajectory 61 is separated from the component 42, the influence of the tool offset on the component 42 is not a problem.

Thereafter, the operation of the program is temporarily suspended by executing the optional stop of the block 5012 set in the semi-finishing processing section 501. During this interruption, the operator actually measures the semi-finished workpiece, calculates the difference between the commanded coordinate value and the measured value to obtain the tool offset amount, and inputs this value into the offset amount memory. , Memorize.

Next, the execution of the machining program 50 is restarted, the offset amount stored in the offset amount memory is read out, the offset amount of the tool is corrected, and the finishing machining 502 is executed. 62 is drawn. The offset of the tool is preferably measured immediately before the finishing process in consideration of the one caused by wear, and the amount of the offset thus obtained is reflected in the finishing process, so that the accuracy of the finishing process is improved.

If the machining program 50 is executed while the optional block skip switch is turned on, the semi-finishing machining section 501 to which the optional block skip code (symbol /) is added is not executed, and thus the semi-finishing is performed. This code is effective when the machining is unnecessary and the measurement of the offset amount of the tool is unnecessary.

In the above description, the tool used during finishing is used for the intermediate finishing, and the offset amount of the tool is measured. However, this is a step before the finishing and the tool is As long as it is the process used
The step of measuring the offset amount does not need to be a semi-finishing process, and may be any step.

[0023]

As described above, according to the present invention, prior to executing the actual machining process, the trial machining process using the tool used in the actual machining process is executed, and the trial machining process is executed. Since the offset amount of the tool thus obtained is configured to be reflected in the subsequently executed actual machining process, the trial machining can be easily performed. That is, the finishing machining program can be efficiently created.

[Brief description of drawings]

FIG. 1 is a diagram showing a machining program created by a method of the present invention.

FIG. 2 is a block diagram showing an example of an interactive numerical control device to which the method of the present invention is applied.

FIG. 3 is a flowchart showing a procedure of an input operation by an operator.

FIG. 4 is a flowchart showing detailed contents of step S3 of FIG.

FIG. 5 is a diagram showing a display screen of a display device displaying an example of a processing type.

FIG. 6 is a view showing a shape of a material and parts, and also showing a cutting region for outer diameter intermediate finishing.

FIG. 7 is a diagram showing the shapes of materials and parts, and also showing a cutting region for outer diameter finishing.

FIG. 8 is a diagram showing a tool path through which a tool passes.

[Explanation of symbols]

 16 Display device 17 Keyboard 23 Software key 31 Processor 50 Processing program 501 Medium finishing processing section 502 Finishing processing section

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[Procedure amendment]

[Submission date] September 21, 1992

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Correction target item name] All drawings

[Correction method] Change

[Correction content]

[Figure 7]

[Figure 8]

[Figure 1]

[Figure 3]

[Figure 5]

[Figure 6]

[Fig. 2]

[Figure 4]

Claims (3)

[Claims] 1. An interactive automatic programming method of a numerical controller for executing trial machining and actual machining, wherein a tool number used in an actual machining process is read, and a trial machining using a tool having the read tool number. The first part of the machining program for executing the process in the process prior to the actual machining process is created, and the offset amount of the tool measured after the execution of the trial machining process is read and read. A second part of the machining program for executing the actual machining step based on an offset amount is created, and a single machining program including at least the first part and the second part is created. Interactive automatic programming method. 2. The interactive automatic programming method according to claim 1, wherein the first portion of the machining program has an optional block skip code. 3. The interactive automatic programming method according to claim 1, wherein the actual machining step is a finishing machining step.